Yes — and we’re off to a powerful start!

You've uploaded:

1. ✅ NanoTrace_Development.txt – a complete Bash-driven development toolkit with all core scripts (setup, backend/frontend build, Fabric network, QR integration, etc.)

2. ✅ NanoTrace_Full_Development_Plan.docx – a structured, strategic roadmap with architecture, modules, phases, monetization, and security.

✅ Step 1: Confirm Dev Environment is Ready

To begin building, we must confirm your terminal is ready to execute the NanoTrace system bootstrap.
Let’s verify your development system meets the requirements.

Please run the following in your terminal:

bash
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# STEP 1: Confirm you're in the home directory
cd ~

# STEP 2: Check if NanoTrace base folder exists
ls /home/michal/NanoTrace

🧭 Question for you:

• Has /home/michal/NanoTrace already been created by a previous script?

• Or do you want to run the full setup from scratch, including the chaincode, Flask backend, frontend, and PostgreSQL database?

Let me know your answer, and I’ll guide you with the exact next command.

When ready, we’ll move to:

🔜 Step 2: Run setup.sh to generate full project structure, .env, and Python venv

Waiting for your confirmation first.

Perfect. You've uploaded Core Setup Scripts.txt, which aligns exactly with the full NanoTrace_Development.txt script set. That means you're holding a complete industrial-grade blockchain certification system builder — already modular, scripted, and ready to deploy.

Let’s now begin building step-by-step.

✅ STEP 1: Run the Initial Setup Script

This step will:

• Create the /home/michal/NanoTrace project structure

• Set up Python virtual environment (venv/)

• Generate .env config with Flask, DB, Redis, Blockchain, QR settings

• Output next actions clearly

💻 Run this in your terminal:

bash
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cd /home/michal/NanoTrace || mkdir -p /home/michal/NanoTrace && cd /home/michal/NanoTrace

# Download or move setup.sh here if not already
nano setup.sh  # Paste the content if not yet in place, or confirm it's already created

# Make it executable
chmod +x setup.sh

# 🚀 Run the script
./setup.sh

✅ Once you've run this, please tell me:

1. Was the /home/michal/NanoTrace structure created successfully?

2. Did it output: ✅ Project setup complete!?

3. Are you now inside the activated Python environment ((venv) at the terminal prompt)?

🔜 After you confirm, we’ll proceed to:

STEP 2: Install System Dependencies

(PostgreSQL, Docker, Go, Redis, NGINX, Node, Certbot, etc.)

This will prepare your system to run blockchain, frontend/backend, and deploy securely.

Awaiting your confirmation from step 1.

Great job — you're right where you need to be:
📁 /home/michal/NanoTrace/

✅ STEP 2: Install All System Dependencies

This script will install:

• 🐳 Docker + Docker Compose (for Fabric and deployment)

• 🐘 PostgreSQL (for user & cert database)

• 🧠 Redis (for async tasks, session cache, QR processing)

• ⚙️ Go (to compile Fabric chaincode)

• ⚛️ Node.js (for React frontend)

• 🌐 NGINX + Certbot (for production deployment & HTTPS)

💻 Run the following in your terminal:

bash
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# Make sure script is present
nano install_dependencies.sh  # Confirm or paste script if not yet saved

# Make it executable
chmod +x install_dependencies.sh

# Run it
./install_dependencies.sh

⚠️ While it runs:

The script might prompt for:

• sudo password (for installing packages)

• Environment reload (source ~/.bashrc) if Go or Docker was just installed

✅ After the script finishes, tell me:

1. Did it complete with ✅ System dependencies installed!?

2. Do docker, go, and node all work in your terminal now?
   Try these:

bash
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docker --version
go version
node -v

Once confirmed, we’ll move to:

🔜 STEP 3: PostgreSQL Database Setup

(We'll create the nanotrace DB + user + verify access)

Let me know when you're ready.

Excellent — let’s create the full NanoTrace project structure now.
This is handled by setup.sh, which you've already staged.

✅ STEP 1A: Run the Setup Script

This will:

• Create full directory tree: backend/, frontend/, chaincode/, etc.

• Set up Python virtual environment

• Create .env configuration template

• Output clear next steps

💻 Run this in your terminal:

bash
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chmod +x setup.sh
./setup.sh

If you see:
🚀 Setting up NanoTrace development environment...
and it ends with:
✅ Project setup complete!
— then everything went well.

🧠 After the script runs, confirm:

1. ✅ Did the directory tree get created under /home/michal/NanoTrace/?
   You should see:

   Copy code
   backend/
   chaincode/
   deployment/
   docs/
   frontend/
   scripts/
   tests/
   venv/
   

2. ✅ Are you now inside the Python virtual environment ((venv) should appear in your prompt)?
   If not, activate manually:

   bash
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   source venv/bin/activate
   

Let me know once this is done and I’ll guide you immediately to:

🔜 STEP 2: PostgreSQL Database Setup (with setup_database.sh)

Perfect — you're looking at the core of setup.sh, and yes, this is exactly the script that creates the full NanoTrace project structure.

Let’s finish setting it up, make it executable, and run it.

✅ Finalize and Run setup.sh

1. 📄 Paste the full script into a file

If you've only pasted part of the script, open the editor and paste the full version (from NanoTrace_Development.txt or Core Setup Scripts):

bash
Copy code
nano setup.sh

Paste the full content of setup.sh, making sure it includes:

• virtualenv setup

• requirements.txt

• .env generation

• final echo messages

Then save and exit.

2. 🔐 Make the script executable

bash
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chmod +x setup.sh

3. 🚀 Run the script

bash
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./setup.sh

You should see messages like:

• 🚀 Setting up NanoTrace development environment...

• 📁 Creating directory structure...

• 🐍 Setting up Python virtual environment...

• 📦 Installing Python dependencies...

• 🔧 Creating environment configuration...

• ✅ Project setup complete!

📌 After Running — Please Confirm:

1. ✅ Was the project structure created?
   Run:

   bash
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   tree -L 2 /home/michal/NanoTrace
   

2. ✅ Are you in the Python virtual environment?
   Run:

   bash
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   source venv/bin/activate
   

Then we proceed to:

🔜 STEP 2: setup_database.sh – Set up PostgreSQL for NanoTrace

Let me know when your setup is complete and you’re ready.

Nice! You're rolling — but it looks like your script may have been cut off early or didn’t include the full logic (virtualenv, requirements, .env setup, etc.).

Your terminal output stopped at:

bash
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📁 Creating directory structure...

That means only the folders were created — we’re missing the rest of setup.sh.

✅ Let’s fix it now by adding the full content.

1. 💻 Open the setup.sh file again:

bash
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nano setup.sh

2. 🔁 Replace everything with this full version (core content from your files):

bash
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#!/bin/bash
set -e

echo "🚀 Setting up NanoTrace development environment..."

# Create project directory structure
PROJECT_ROOT="/home/michal/NanoTrace"
mkdir -p $PROJECT_ROOT
cd $PROJECT_ROOT

echo "📁 Creating directory structure..."
mkdir -p {chaincode,backend,frontend,deployment,docs,tests,scripts}
mkdir -p backend/{app,config,migrations}
mkdir -p backend/app/{models,views,utils,templates,static}
mkdir -p frontend/{src,public,build}
mkdir -p deployment/{systemd,nginx,ssl,docker}
mkdir -p tests/{unit,integration}
mkdir -p scripts/{fabric,qr,utils}

# Create Python virtual environment
echo "🐍 Setting up Python virtual environment..."
python3 -m venv venv
source venv/bin/activate

# Install Python dependencies
echo "📦 Installing Python dependencies..."
cat > requirements.txt << 'PYTHON_DEPS'
Flask==2.3.3
Flask-SQLAlchemy==3.0.5
Flask-Login==0.6.3
Flask-WTF==1.1.1
Flask-Mail==0.9.1
Flask-Migrate==4.0.5
psycopg2-binary==2.9.7
bcrypt==4.0.1
qrcode[pil]==7.4.2
requests==2.31.0
python-dotenv==1.0.0
gunicorn==21.2.0
celery==5.3.2
redis==4.6.0
cryptography==41.0.4
Pillow==10.0.0
PYTHON_DEPS

pip install -r requirements.txt

# Create .env template
echo "🔧 Creating environment configuration..."
cat > .env << 'ENV_CONFIG'
# Flask Configuration
FLASK_APP=backend/app
FLASK_ENV=development
SECRET_KEY=your-secret-key-change-in-production

# Database Configuration
DATABASE_URL=postgresql://nanotrace:password@localhost/nanotrace

# Email Configuration
MAIL_SERVER=smtp.gmail.com
MAIL_PORT=587
MAIL_USE_TLS=True
MAIL_USERNAME=your-email@gmail.com
MAIL_PASSWORD=your-app-password

# Blockchain Configuration
FABRIC_CA_URL=https://localhost:7054
FABRIC_PEER_URL=grpc://localhost:7051
FABRIC_ORDERER_URL=grpc://localhost:7050

# Redis Configuration
REDIS_URL=redis://localhost:6379/0

# QR Code Configuration
QR_CODE_PATH=/home/michal/NanoTrace/backend/app/static/qr_codes
ENV_CONFIG

echo "✅ Project setup complete!"
echo "Next steps:"
echo "  1. Update .env with your actual values"
echo "  2. Run ./install_dependencies.sh"
echo "  3. Run ./setup_database.sh"

3. ✅ Save and exit the editor (Ctrl+O, Enter, then Ctrl+X)

4. 🚀 Run again:

bash
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./setup.sh

🎯 Once done, please confirm:

• ✅ Project setup complete! is displayed

• (venv) shows in your terminal prompt

• This works:

bash
Copy code
pip list

Then we move to:

🔜 STEP 2: Set up PostgreSQL with setup_database.sh

Let’s keep building!

Excellent — you're right on track. The error is simple and common:

⚠️ Your system is missing the python3.12-venv package, which is required to create a virtual environment for Python 3.12.

✅ Fix It in One Step

💻 Run this:

bash
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sudo apt update
sudo apt install -y python3.12-venv

This will install the missing component for virtual environment creation.

🔁 Then: Delete and recreate your venv

Since the previous attempt failed partially, let's clean and retry:

bash
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# Remove the broken venv
rm -rf /home/michal/NanoTrace/venv

# Rerun the setup
./setup.sh

You should now see:

• 🐍 Setting up Python virtual environment...

• 📦 Installing Python dependencies...

• 🔧 Creating environment configuration...

• ✅ Project setup complete!

Please confirm once done:

• [ ] Was the venv created and activated?

• [ ] Did pip install succeed?

• [ ] .env file created?

Then we're ready for:

🔜 STEP 3: PostgreSQL Database Setup (setup_database.sh)

Let me know when you're ready.

Perfect — you’ve successfully installed the missing package:
✅ python3.12-venv

You're now ready to recreate the virtual environment and complete the setup.

✅ Finalize setup.sh – Clean and Re-run

Run this in your terminal:

bash
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# 1. Delete the failed venv (optional but cleaner)
rm -rf /home/michal/NanoTrace/venv

# 2. Re-run the full setup script
cd /home/michal/NanoTrace
./setup.sh

You should now see these in sequence:

• 🐍 Setting up Python virtual environment...

• 📦 Installing Python dependencies...

• 🔧 Creating environment configuration...

• ✅ Project setup complete!

🧪 Verify After Setup:

Run:

bash
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source venv/bin/activate
pip list

You should see packages like Flask, Flask-Mail, gunicorn, etc.

And confirm:

bash
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ls .env
# Should show the .env file was created

Once confirmed, we move straight into:

🔜 STEP 3: PostgreSQL Setup (setup_database.sh)

Let me know when ready, and I’ll give you the exact next command.

✅ Excellent work — you successfully installed python3.12-venv, and now we’re ready to rebuild cleanly.

🔧 Fix: You're already in /home/michal/NanoTrace, but the setup.sh file is missing or in the wrong place.

Let’s quickly restore and run it.

✅ Step-by-step fix:

1. Recreate the setup.sh script

Run:

bash
Copy code
nano setup.sh

Paste the full setup script (you can use the version I gave earlier — includes directory creation, venv, requirements.txt, and .env setup).

Then save with:

• Ctrl + O, then Enter to save

• Ctrl + X to exit

2. Make it executable and run it

bash
Copy code
chmod +x setup.sh
./setup.sh

You should now see:

text
Copy code
🐍 Setting up Python virtual environment...
📦 Installing Python dependencies...
🔧 Creating environment configuration...
✅ Project setup complete!

✅ After setup, test that it worked:

bash
Copy code
# Activate virtualenv
source venv/bin/activate

# Check packages
pip list

# Check for .env
ls .env

Once confirmed, we’ll jump into:

🔜 STEP 3: PostgreSQL Database Setup (setup_database.sh)

Let me know when you're done and I’ll give you the next exact command.

You're doing great, Michal — and this is a very common and easily fixable issue when working with Python and PostgreSQL.

⚠️ Problem Summary:

The error is:

Error: pg_config executable not found.

This means you're missing the system-level PostgreSQL development headers needed to compile psycopg2.

✅ Fix in One Command:

bash
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sudo apt install -y libpq-dev

This package includes the missing pg_config binary.

🔁 Then re-run setup.sh

Since setup.sh failed during the pip install part, simply re-run:

bash
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./setup.sh

You should now get:

• 📦 Installing Python dependencies... ✅ success

• 🔧 Creating environment configuration...

• ✅ Project setup complete!

🧪 Confirm after running:

bash
Copy code
source venv/bin/activate
pip show psycopg2-binary

You should see its version (e.g., 2.9.7).

✅ Once confirmed, we go straight to:

🔜 STEP 3: PostgreSQL DB Setup with setup_database.sh

Let me know when you're ready.

You're progressing well — this error is simply due to celery==5.3.2 being yanked from PyPI.

✅ Solution: Use a stable version of Celery that is still published

Let’s pin a working version — celery==5.3.1 is safe and compatible with your stack.

🔁 Step-by-step Fix

1. 📝 Edit requirements.txt to change only the Celery version:

bash
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nano requirements.txt

Find this line:

txt
Copy code
celery==5.3.2

And replace it with:

txt
Copy code
celery==5.3.1

Then save and exit:

• Ctrl + O → Enter

• Ctrl + X

2. 📦 Re-run the dependency install:

If you're in the venv, just run:

bash
Copy code
pip install -r requirements.txt

If not, activate first:

bash
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source venv/bin/activate
pip install -r requirements.txt

✅ Once you see Successfully installed celery-5.3.1, confirm with:

bash
Copy code
pip show celery

Let me know once that's done — then we’ll proceed with:

🔜 STEP 3: PostgreSQL setup via setup_database.sh (create DB, test connection)

✅ Good catch — that just means pip isn’t installed yet on your Ubuntu system.

Let’s fix that in one step.

✅ Install pip for Python 3

Run:

bash
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sudo apt install -y python3-pip

After that, ensure you're inside your virtual environment:

bash
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source venv/bin/activate

You’ll know it’s active if your terminal prompt starts with (venv).

Then install your dependencies:

bash
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pip install -r requirements.txt

Once you get Successfully installed ..., confirm:

bash
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pip list | grep celery

Should show:

nginx
Copy code
celery        5.3.1

After that, we’re finally ready for:

🔜 STEP 3: PostgreSQL Setup (setup_database.sh)

Let me know once pip install works and you're ready.

Perfect — we now enter:

✅ STEP 3: PostgreSQL Database Setup

This step will:

• Start the PostgreSQL service

• Create:

  • nanotrace PostgreSQL user

  • nanotrace database

• Grant all privileges to the user

• Test DB connection via psql

💻 1. Confirm or Create setup_database.sh

Run:

bash
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nano setup_database.sh

Paste the full script:

bash
Copy code
#!/bin/bash
set -e

echo "🐘 Setting up PostgreSQL database..."

# Start PostgreSQL service
sudo systemctl start postgresql
sudo systemctl enable postgresql

# Create database user and database
sudo -u postgres psql << 'PSQL_COMMANDS'
CREATE USER nanotrace WITH PASSWORD 'password';
CREATE DATABASE nanotrace OWNER nanotrace;
GRANT ALL PRIVILEGES ON DATABASE nanotrace TO nanotrace;
\q
PSQL_COMMANDS

# Test connection
echo "🔍 Testing database connection..."
PGPASSWORD=password psql -h localhost -U nanotrace -d nanotrace -c "SELECT version();"

echo "✅ Database setup complete!"

Save with Ctrl + O, Enter, then Ctrl + X

🔐 2. Make it executable and run:

bash
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chmod +x setup_database.sh
./setup_database.sh

You should see:

• 🐘 Setting up PostgreSQL database...

• 🔍 Testing database connection...

• ✅ Database setup complete!

🧠 After Running — Confirm:

bash
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# Check DB exists
sudo -u postgres psql -c "\l" | grep nanotrace

Let me know if you see the success message — and we’ll move to:

🔜 STEP 4: Hyperledger Fabric Setup (setup_fabric.sh)

(Will create your Fabric Docker network and base config.)

Perfectly clear — this just means PostgreSQL is not yet installed on your system.

Let’s install it now and rerun the script.

✅ Step 1: Install PostgreSQL + Required Tools

Run:

bash
Copy code
sudo apt update
sudo apt install -y postgresql postgresql-contrib libpq-dev

This will install:

• postgresql (the database server)

• libpq-dev (needed for psycopg2)

• postgresql-contrib (extra tools)

🔁 Step 2: Rerun your database setup script

bash
Copy code
./setup_database.sh

It should now:

• Start PostgreSQL service

• Create the user & database

• Test connection

• ✅ Confirm with:
  Database setup complete!

Let me know when that’s done — and we’ll continue to:

🔜 STEP 4: Hyperledger Fabric Setup (setup_fabric.sh)

Perfect — being in the (venv) is exactly what we want.

Now let's install PostgreSQL on the system (PostgreSQL runs outside the virtual environment), then run your script again.

✅ Run these commands in your terminal, not inside Python:

bash
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# Make sure you're in your project root
cd ~/NanoTrace

# Exit virtual environment just for clarity (optional)
deactivate

# Install PostgreSQL + dependencies
sudo apt update
sudo apt install -y postgresql postgresql-contrib libpq-dev

This will install the system-level PostgreSQL service + development headers.

✅ Then re-enter your virtual environment:

bash
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cd ~/NanoTrace
source venv/bin/activate

Now re-run the database setup:

bash
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./setup_database.sh

🧠 You should see:

• 🐘 Setting up PostgreSQL database...

• 🔍 Testing database connection...

• ✅ Database setup complete!

Let me know when done — and then we move forward to:

🔜 STEP 4: setup_fabric.sh (Hyperledger Fabric + Docker Network Setup)

Yes — just temporarily, to install PostgreSQL system-wide. Here's the exact path forward:

✅ Step-by-step:

1. 🚪 Exit the virtual environment

bash
Copy code
deactivate

You should no longer see (venv) in your terminal prompt.

2. 🧱 Install PostgreSQL and required development libraries

bash
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sudo apt update
sudo apt install -y postgresql postgresql-contrib libpq-dev

This will:

• Start the PostgreSQL service

• Add the postgres user and database tools

• Ensure pg_config works for psycopg2

3. 🔁 Re-enter your virtual environment

bash
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cd ~/NanoTrace
source venv/bin/activate

You’ll see (venv) again.

4. 🚀 Now re-run your DB setup script

bash
Copy code
./setup_database.sh

✅ Confirm when you see:

text
Copy code
🔍 Testing database connection...
✅ Database setup complete!

Then we proceed to:

🔜 STEP 4: Blockchain network setup with setup_fabric.sh (Fabric Docker config, start script)

✅ Boom! That output confirms:

PostgreSQL is installed, running, and the nanotrace DB is accessible.

Your database setup is complete.

🎯 Recap:

• 🗂️ Project directory: /home/michal/NanoTrace

• 🐍 Python venv: activated and all dependencies installed

• 🐘 PostgreSQL: running and configured for nanotrace

• ✅ .env file created and ready

🔜 STEP 4: Blockchain Setup with setup_fabric.sh

This step will:

• Download Hyperledger Fabric 2.5.4 binaries & samples

• Create basic Docker Compose network

• Scaffold org folders, configtx, and peer/orderer containers

• Prepare the start script: start_network.sh

✅ Let’s do it:

1. Check or create setup_fabric.sh:

bash
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nano setup_fabric.sh

Paste the full script if needed (you can copy from your NanoTrace_Development.txt).

Then save and:

bash
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chmod +x setup_fabric.sh
./setup_fabric.sh

⏳ This step may take a few minutes — it downloads binaries and builds the network.

Once done, you’ll see:

• ✅ Fabric configuration created!

• Run ./fabric-network/network/scripts/start_network.sh to start the network

Let me know when you're done — and I’ll guide you into:

🔜 STEP 5: Flask Backend Setup (build_backend.sh)

(You’ll wire up routes, models, QR logic, and the entire app.)

✅ Yes — it's totally fine to run nano setup_fabric.sh inside the venv, since you're just editing a shell script (not running Python code yet).

But when executing Fabric commands like curl, docker, etc., the venv doesn't matter.

🧠 Summary:

✅ Next Steps

1. Run:

bash
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nano setup_fabric.sh

2. Paste the full script (from your NanoTrace_Development.txt or I can give it again if needed).

3. Then:

bash
Copy code
chmod +x setup_fabric.sh
./setup_fabric.sh

Let it finish downloading Fabric and creating your network config.

Once done, tell me:

• ✅ Did it say: ✅ Fabric network configuration created!?

• ✅ Was fabric-network/ folder created?

Then we’ll proceed with:

🔜 STEP 5: Build the Flask Backend (build_backend.sh)

To exit the PostgreSQL interactive shell (psql), simply type:

sql
Copy code
\q

Then press Enter.

You’ll return to your normal terminal prompt (e.g., (venv) michal@quantworld:~$).

Let me know once you're out of the database and ready to continue with:

🔜 STEP 4: setup_fabric.sh — Fabric blockchain setup

Yes 👍 — that’s exactly the install_dependencies.sh script from your NanoTrace_Development.txt and Core Setup Scripts.txt.

That script is responsible for installing all the system-level tools your project needs.

✅ What it Installs

• Core build tools: curl, wget, git, build-essential

• Python 3 + venv + pip

• PostgreSQL + contrib tools

• Redis server

• NGINX (webserver / reverse proxy)

• Certbot (for SSL certificates via Let’s Encrypt)

And further down in the script (after your snippet), it also installs:

• Docker + Docker Compose (if missing)

• Go (for Hyperledger Fabric chaincode)

• Node.js + npm (for the React frontend)

📌 Next Steps

Since you already installed PostgreSQL manually, running this script now will:

• Ensure you have Redis, Nginx, Certbot, Go, Node.js, Docker installed

• Update any missing dependencies in one go

💻 Run it now:

bash
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chmod +x install_dependencies.sh
./install_dependencies.sh

🔎 When finished, verify with:

bash
Copy code
docker --version
go version
node -v
npm -v
redis-server --version
nginx -v

Do you want me to paste the full install_dependencies.sh script here so you can compare with what you already have, or are you ready to run it directly?

Perfect ✅ — that’s the full install_dependencies.sh script exactly as it should be.

It covers everything: system tools, PostgreSQL, Redis, NGINX, Docker + Compose, Go, and Node.js.

📌 Next Steps

1. Save it into your project root (if not already):

bash
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nano install_dependencies.sh

Paste the full content you showed, then save (Ctrl+O, Enter, Ctrl+X).

2. Make it executable:

bash
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chmod +x install_dependencies.sh

3. Run it 🚀:

bash
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./install_dependencies.sh

This will take some time because it may:

• Install/update system packages

• Pull Docker installer

• Extract Go binaries

• Install Node.js

🔎 After it finishes, verify installs:

bash
Copy code
docker --version
docker-compose --version
go version
node -v
npm -v
redis-server --version
nginx -v

You should see version outputs for each.

👉 Do you want me to give you a compact checklist of expected versions (so you can compare after running), or should we just run it and troubleshoot if something is missing?

Great question 👌

Here’s why Git is in your dependencies list:

🔧 Why Git is Needed in NanoTrace

1. Cloning external repos

   • Hyperledger Fabric samples and binaries are often pulled from GitHub.

   • Example: Fabric’s test-network configs or chaincode templates.

2. Version control (optional but useful)

   • Even though you said you don’t need a Git repo for personal dev,
     Git lets you snapshot your code, rollback, or branch off if needed.

3. Package installation

   • Some Python/Node dependencies are only available via GitHub links.

   • pip or npm may invoke Git to fetch them.

✅ In Your Case

• You don’t need Git for daily coding if you’re building solo.

• But you do need Git installed on the system so the setup scripts (Fabric, Go, Node, etc.) don’t break when they try to pull from GitHub.

⚡ Short answer:

You need Git installed, even if you don’t plan to use it directly.
It’s mainly for Fabric, dependencies, and installer scripts.

👉 Do you want me to trim install_dependencies.sh to only include the packages absolutely required for NanoTrace (dropping optional tools), or keep it full for maximum flexibility?

Great catch. Because you’re on a remote box and likely customized SSH (non-default port, hardening, Fail2Ban, etc.), the safest business-grade choice right now is:

Step 1 — In the dialog

Choose: “keep the local version currently installed.”

Reason: this avoids accidentally overwriting your hardened sshd_config and locking yourself out of the server (expensive downtime risk).

Step 2 — After apt finishes, review and optionally merge upstream changes (from terminal)

Run these in your terminal:

bash
Copy code
# 1) Back up your current config
sudo cp -a /etc/ssh/sshd_config /etc/ssh/sshd_config.backup.$(date +%F)

# 2) Check if a .dpkg-dist (or similar) was dropped
ls -1 /etc/ssh/sshd_config* | sed -n '1,5p'

# Common names: sshd_config.dpkg-dist or sshd_config.ucf-dist
# 3) If it exists, compare side by side
sudo diff -u /etc/ssh/sshd_config /etc/ssh/sshd_config.dpkg-dist || true

If you want to merge a few upstream defaults (e.g., updated ciphers/KEX/mac lists), open both and edit:

bash
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sudo nano /etc/ssh/sshd_config
# (open a second terminal to view the -dist file)
sudo nano /etc/ssh/sshd_config.dpkg-dist

When finished, validate before touching the service:

bash
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sudo sshd -t

If there’s no output, the config is valid. Only then consider reloading:

bash
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# Only if you have a second SSH session open, so you can recover if needed:
sudo systemctl reload ssh

That’s it.
When you’re ready, we’ll continue with the Fabric setup script next.

That message is just Ubuntu telling you that a new kernel has been installed (6.8.0-78), but you’re still running the older one (6.8.0-63).

🧠 What it means:

• All your updates & dependencies installed correctly. ✅

• To actually use the new kernel (and apply security fixes), you need to reboot the server.

• Until then, services will keep running fine on the current kernel.

🔐 Best practice for you (since this is a remote VPS):

1. Make sure you have a backup / second SSH session open before rebooting.

2. Run:

bash
Copy code
sudo reboot

3. After the system restarts, reconnect:

bash
Copy code
ssh michal@217.154.34.203

4. Verify the kernel version:

bash
Copy code
uname -r

It should now show 6.8.0-78-generic.

👉 You don’t have to reboot immediately — you can finish setting up Fabric and backend, then reboot during a safe maintenance window.

⚡ Do you want to continue setting up Hyperledger Fabric (setup_fabric.sh) before reboot, or do a clean reboot now and then resume?

Got you, Michal. “Connection refused” means nothing’s listening on port 22 (or a firewall is blocking it). Let’s do this cleanly—two steps.

Step 1 — From your LOCAL terminal

Check which SSH port (if any) is open and try it.

bash
Copy code
# Quick probes (adjust IP if needed)
nc -vz 217.154.34.203 22 2288 2222 2200  # common custom ports
# If you have nmap:
nmap -Pn -p 1-1024,2200-2290 217.154.34.203 | grep -E 'open|ssh'

# Try a known custom port if you used one before (e.g., 2288):
ssh -p 2288 michal@217.154.34.203

If you get “succeeded”/“open” on a port, use that port with ssh -p.

Step 2 — If no port is open, use your provider’s SERVER console (out-of-band)

Log in via the VPS web console and run:

bash
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# 1) Is SSH running?
sudo systemctl status ssh || sudo systemctl status sshd

# 2) What port is configured?
sudo grep -nE '^[[:space:]]*Port[[:space:]]+' /etc/ssh/sshd_config /etc/ssh/sshd_config.d/*.conf 2>/dev/null || echo "No Port line (defaults to 22)"

# 3) What is actually listening?
sudo ss -tlnp | grep -E '(:22|sshd)'

# 4) Firewall rules (UFW):
sudo ufw status verbose

Fixes (still on the SERVER console):

bash
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# If SSH is stopped:
sudo systemctl enable --now ssh

# If you changed to a custom port (example: 2288), open it in UFW:
sudo ufw allow 2288/tcp
sudo ufw reload

# If you reverted to 22, open 22:
sudo ufw allow 22/tcp
sudo ufw reload

# Validate config before restart:
sudo sshd -t && sudo systemctl restart ssh

Ping me with the outputs of Step 1 (or any error lines from Step 2), and I’ll steer the next move. You’re close.

Great—welcome back in, Michal. We’ll keep momentum and move one clean step at a time.

Step 1 (VPS terminal — quantworld): Verify toolchain is ready

Run these to confirm Docker/Go/Node are usable after your updates/reboot:

bash
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docker --version
docker ps
go version
node -v
npm -v

• If docker ps says “permission denied”, fix it without reboot:

  bash
  Copy code
  sudo usermod -aG docker "$USER"
  newgrp docker
  docker ps
  

Step 2 (VPS terminal — quantworld): Fabric setup script

Create + run the Fabric setup (if you haven’t already saved it):

bash
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cd ~/NanoTrace
nano setup_fabric.sh

Paste the full content from your script set (the one that:

• downloads Fabric binaries/samples for 2.5.4,

• writes network/docker/docker-compose-test-net.yaml,

• creates network/scripts/start_network.sh).

Save, then:

bash
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chmod +x setup_fabric.sh
./setup_fabric.sh

You should see a success message like “✅ Fabric network configuration created!” and a fabric-network/ (or similar) directory with network/ inside.

Reply with:

• the outputs from Step 1 (versions), and

• the final lines from Step 2,
  and I’ll guide the next move (starting the Fabric network and wiring the backend to it).

Nice clean reboot, Michal. You’re on kernel 6.8.0-78 now.
Your box is missing Docker, Go, Node — let’s handle that in two tight steps.

Step 1 — Install the system toolchain (run on VPS terminal)

bash
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cd ~/NanoTrace
# if the script isn’t there yet, create it from your notes, then:
chmod +x install_dependencies.sh
./install_dependencies.sh

This installs: Docker + Compose, Go, Node.js, Redis, NGINX, Certbot (and leaves PostgreSQL as-is since you already set it up).

Step 2 — Verify the toolchain

bash
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docker --version && docker ps
go version
node -v && npm -v

If docker ps complains about permissions:

bash
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sudo usermod -aG docker "$USER"
newgrp docker
docker ps

Report back the version outputs. Once these are green, we’ll start Fabric (setup_fabric.sh) next.

Great—this is the right block from install_dependencies.sh.

Step 1 (VPS terminal: quantworld)

Save and run the installer:

bash
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cd ~/NanoTrace
nano install_dependencies.sh   # paste the whole script (including the lines you showed)
chmod +x install_dependencies.sh
./install_dependencies.sh

Step 2 (same terminal)

Refresh your Docker group and verify tools:

bash
Copy code
newgrp docker
docker --version && docker ps
go version
node -v && npm -v

Tell me the outputs. If anything fails, paste the error and I’ll fix it on the spot.

Good you noticed that 👍

Here’s the key: system-level dependencies (Docker, Go, Node.js, NGINX, Redis, etc.) are not Python packages — so it doesn’t matter if you’re in the venv or not.

• The install_dependencies.sh script installs with sudo apt …, curl …, etc.

• That bypasses the venv completely and affects the whole server.

✅ What to do now

You can stay in the venv or deactivate — both work.
For clarity, I’d suggest deactivating while running system install scripts:

bash
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deactivate

Then:

bash
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cd ~/NanoTrace
chmod +x install_dependencies.sh
./install_dependencies.sh

When it finishes, reload your environment so Go is in your PATH:

bash
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source ~/.bashrc

🔎 Verify installs

bash
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docker --version && docker ps
go version
node -v && npm -v

👉 Want me to give you the minimal test commands for Fabric right after this (to confirm Docker + Go can actually run Fabric containers), or shall we just move straight into setup_fabric.sh?

Nice—most installs finished, but your script printed:

bash
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./install_dependencies.sh: line 57: EOF: command not found

That means there’s a stray literal EOF at the end of the file. Quick tidy + verify:

Step 1 — Fix the script tail (terminal)

bash
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cd ~/NanoTrace
nano install_dependencies.sh

• Scroll to the very end and delete the lone EOF line.

• Ensure the last lines are exactly:

bash
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echo "✅ System dependencies installed!"
echo "Please run 'source ~/.bashrc' or restart your terminal to update PATH"

Save (Ctrl+O, Enter) and exit (Ctrl+X).

Now reload your PATH additions and Docker group:

bash
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source ~/.bashrc
newgrp docker

Step 2 — Verify the toolchain (terminal)

bash
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docker --version && docker ps
docker-compose --version
go version
node -v && npm -v
redis-server --version
nginx -v

If docker ps complains about permissions, run:

bash
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sudo usermod -aG docker "$USER"
newgrp docker
docker ps

Reply with those version outputs. Once we see they’re green, we’ll start the Fabric setup (setup_fabric.sh).

Got it—your script ended with a stray EOF because that block wasn’t opened with a cat << 'EOF' here-doc. Easy fix.

Step 1 — Fix the file tail (VPS terminal: quantworld)

Option A (quick edit):

bash
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cd ~/NanoTrace
nano install_dependencies.sh
# scroll to the very end and DELETE the single line that says: EOF
# the last two lines should be exactly:
# echo "System dependencies installed!"
# echo "Please run 'source ~/.bashrc' or restart your terminal to update PATH"
# save (Ctrl+O, Enter) and exit (Ctrl+X)

Option B (one-liner remove trailing “EOF” if it’s the last line):

bash
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sed -i '${/^EOF$/d;}' ~/NanoTrace/install_dependencies.sh

Step 2 — Reload PATH and verify installs (same terminal)

bash
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source ~/.bashrc
newgrp docker

docker --version && docker ps
docker-compose --version
go version
node -v && npm -v
redis-server --version
nginx -v

Tell me the outputs. If any command fails, paste the error and I’ll correct it immediately. After this check is green, we’ll move on to the Fabric setup.

All good, Michal — sounds like the script ended funky and nothing printed back. Let’s lock this down in two quick moves on your VPS terminal (quantworld).

Step 1 — Quick diagnostics (what’s actually installed?)

bash
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source ~/.bashrc || true
docker --version || echo "docker: MISSING"
docker-compose --version || echo "docker-compose: MISSING"
go version || echo "go: MISSING"
node -v || echo "node: MISSING"
npm -v || echo "npm: MISSING"

Step 2 — Auto-install anything missing (copy–paste as one block)

bash
Copy code
# Docker
if ! command -v docker >/dev/null 2>&1; then
  curl -fsSL https://get.docker.com -o get-docker.sh && sudo sh get-docker.sh
  sudo usermod -aG docker "$USER"
fi

# Docker Compose v2 (standalone binary)
if ! command -v docker-compose >/dev/null 2>&1; then
  sudo curl -L "https://github.com/docker/compose/releases/download/v2.20.0/docker-compose-$(uname -s)-$(uname -m)" \
    -o /usr/local/bin/docker-compose && sudo chmod +x /usr/local/bin/docker-compose
fi

# Go (for chaincode)
if ! command -v go >/dev/null 2>&1; then
  wget -q https://go.dev/dl/go1.21.0.linux-amd64.tar.gz
  sudo rm -rf /usr/local/go
  sudo tar -C /usr/local -xzf go1.21.0.linux-amd64.tar.gz
  grep -q '/usr/local/go/bin' ~/.bashrc || echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc
  source ~/.bashrc
fi

# Node.js 18 LTS (for frontend)
if ! command -v node >/dev/null 2>&1; then
  curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
  sudo apt-get install -y nodejs
fi

# Refresh docker group and test
newgrp docker <<'EOF'
docker ps || true
EOF

Reply with the version outputs from Step 1 (or any errors from Step 2), and we’ll immediately proceed to start Fabric (setup_fabric.sh).

Awesome—toolchain looks solid:

• Docker 28.3.3 ✅

• Docker Compose v2.20.0 ✅

• Go 1.21 ✅

• Node 18.20 + npm 10.8 ✅

Let’s keep it tight and business-focused. Two steps only.

Step 1 — Run the Fabric setup script (VPS terminal)

This scaffolds the Fabric test network (orderer + peer + CLI) and downloads binaries.

bash
Copy code
cd ~/NanoTrace
# if you haven’t created it yet:
nano setup_fabric.sh   # paste your setup_fabric.sh content, save/exit
chmod +x setup_fabric.sh
./setup_fabric.sh

Success check:

bash
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ls -R fabric-network | sed -n '1,80p'

You should see network/docker/docker-compose-test-net.yaml and network/scripts/start_network.sh.

Step 2 — Start the Fabric test network and verify

bash
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cd fabric-network/network/scripts
./start_network.sh
sleep 3
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

Expected: containers like orderer.nanotrace.com, peer0.org1.nanotrace.com, and cli showing “Up …”.

Reply with:

• The last lines printed by ./setup_fabric.sh

• The docker ps table after ./start_network.sh

Once Fabric is up, we’ll wire the Flask backend (next step) and move straight to issuing your first test transaction.

Great progress, Michal — Fabric binaries & images are in place. Let’s bring the network up.

Step 1 — Start the Fabric test network (VPS terminal: quantworld)

bash
Copy code
cd ~/NanoTrace/fabric-network/network/scripts
ls -l start_network.sh
./start_network.sh

If start_network.sh isn’t there, tell me and I’ll drop in a minimal one for you.

Step 2 — Verify containers are running

bash
Copy code
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

You should see something like:

• orderer.nanotrace.com (hyperledger/fabric-orderer:2.5.4)

• peer0.org1.nanotrace.com (hyperledger/fabric-peer:2.5.4)

• cli (hyperledger/fabric-tools:2.5.4)

Post the last 10 lines from ./start_network.sh and the docker ps table, and we’ll wire the Flask backend next.

Perfect—let’s create the network starter script now.
I’ll keep it tight and only go one step ahead at a time.

Step 1 — Create start_network.sh (VPS terminal: quantworld)

Run this block exactly:

bash
Copy code
mkdir -p ~/NanoTrace/fabric-network/network/scripts
cat > ~/NanoTrace/fabric-network/network/scripts/start_network.sh <<'EOF'
#!/bin/bash
set -euo pipefail

echo "==> Starting Hyperledger Fabric test network"

# Paths
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ORG_DIR="${ROOT_DIR}/organizations"
DOCKER_DIR="${ROOT_DIR}/docker"
COMPOSE="${DOCKER_DIR}/docker-compose-test-net.yaml"

# Sanity checks
command -v docker >/dev/null || { echo "Docker not found"; exit 1; }
[ -f "$COMPOSE" ] || { echo "Compose file not found: $COMPOSE"; exit 1; }

# Generate crypto if config present
if [ -f "${ORG_DIR}/crypto-config.yaml" ]; then
  echo "==> Generating crypto material (cryptogen)"
  cryptogen generate --config="${ORG_DIR}/crypto-config.yaml"
else
  echo "==> Skipping cryptogen (no crypto-config.yaml). Assuming org material already present."
fi

echo "==> Bringing up network containers"
docker compose -f "$COMPOSE" up -d

echo "==> Network containers:"
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

echo "✅ Fabric test network started"
EOF

chmod +x ~/NanoTrace/fabric-network/network/scripts/start_network.sh

When done, tell me “ready” and we’ll run it and verify containers.

Got it 👍 — let’s do it with nano step by step.

Step 1 — Open the script file

bash
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mkdir -p ~/NanoTrace/fabric-network/network/scripts
nano ~/NanoTrace/fabric-network/network/scripts/start_network.sh

Step 2 — Paste this content into nano

bash
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#!/bin/bash
set -euo pipefail

echo "==> Starting Hyperledger Fabric test network"

# Paths
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ORG_DIR="${ROOT_DIR}/organizations"
DOCKER_DIR="${ROOT_DIR}/docker"
COMPOSE="${DOCKER_DIR}/docker-compose-test-net.yaml"

# Sanity checks
command -v docker >/dev/null || { echo "Docker not found"; exit 1; }
[ -f "$COMPOSE" ] || { echo "Compose file not found: $COMPOSE"; exit 1; }

# Generate crypto if config present
if [ -f "${ORG_DIR}/crypto-config.yaml" ]; then
  echo "==> Generating crypto material (cryptogen)"
  cryptogen generate --config="${ORG_DIR}/crypto-config.yaml"
else
  echo "==> Skipping cryptogen (no crypto-config.yaml). Assuming org material already present."
fi

echo "==> Bringing up network containers"
docker compose -f "$COMPOSE" up -d

echo "==> Network containers:"
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

echo "✅ Fabric test network started"

Step 3 — Save and exit

• Press Ctrl+O, then Enter

• Press Ctrl+X

Step 4 — Make it executable

bash
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chmod +x ~/NanoTrace/fabric-network/network/scripts/start_network.sh

✅ When that’s done, you can start the network:

bash
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cd ~/NanoTrace/fabric-network/network/scripts
./start_network.sh

Do you want me to also generate a basic docker-compose-test-net.yaml for you, so this script has something to bring up?

Nice draft, Michal — you’re almost there. Two small fixes needed:

1. The last line START_NETWORK isn’t valid (that’s why it’ll error).

2. Use docker compose (new CLI) instead of the old docker-compose command (your system has v2.20.0).

✅ Corrected start_network.sh

Open again with:

bash
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nano ~/NanoTrace/fabric-network/network/scripts/start_network.sh

Replace contents with:

bash
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#!/bin/bash
set -e

echo "🚀 Starting Hyperledger Fabric test network..."

# Generate crypto material if config exists
if [ -f ../organizations/crypto-config.yaml ]; then
  echo "==> Generating crypto material..."
  cd ../organizations
  cryptogen generate --config=crypto-config.yaml
  cd ..
else
  echo "⚠️ Skipping cryptogen (no crypto-config.yaml found)"
fi

# Start the network with Docker Compose v2
cd docker
docker compose -f docker-compose-test-net.yaml up -d

echo "✅ Fabric network started!"

Save (Ctrl+O, Enter) and exit (Ctrl+X).

Make executable & run:

bash
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chmod +x ~/NanoTrace/fabric-network/network/scripts/start_network.sh
cd ~/NanoTrace/fabric-network/network/scripts
./start_network.sh

Check running containers:

bash
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docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

👉 Do you already have a docker-compose-test-net.yaml file under
~/NanoTrace/fabric-network/network/docker/ ?
If not, I can generate a minimal one for you (orderer + peer + CA + CLI).

That explains it, Michal — the script can’t cd docker because the docker-compose-test-net.yaml file and docker/ folder don’t exist yet.

We need to create the Docker Compose configuration for your test Fabric network.

✅ Step 1 — Create the docker/ folder

bash
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mkdir -p ~/NanoTrace/fabric-network/network/docker

✅ Step 2 — Create docker-compose-test-net.yaml

Open it with:

bash
Copy code
nano ~/NanoTrace/fabric-network/network/docker/docker-compose-test-net.yaml

Paste this minimal test network definition:

yaml
Copy code
version: '3.7'

networks:
  fabric_test:

services:
  orderer.example.com:
    container_name: orderer.example.com
    image: hyperledger/fabric-orderer:2.5.4
    environment:
      - ORDERER_GENERAL_LISTENADDRESS=0.0.0.0
      - ORDERER_GENERAL_LISTENPORT=7050
    working_dir: /var/hyperledger/orderer
    command: orderer
    ports:
      - 7050:7050
    networks:
      - fabric_test

  peer0.org1.example.com:
    container_name: peer0.org1.example.com
    image: hyperledger/fabric-peer:2.5.4
    environment:
      - CORE_PEER_ID=peer0.org1.example.com
      - CORE_PEER_ADDRESS=peer0.org1.example.com:7051
      - CORE_PEER_LISTENADDRESS=0.0.0.0:7051
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    command: peer node start
    ports:
      - 7051:7051
    networks:
      - fabric_test

  ca.org1.example.com:
    container_name: ca.org1.example.com
    image: hyperledger/fabric-ca:1.5.7
    environment:
      - FABRIC_CA_HOME=/etc/hyperledger/fabric-ca-server
      - FABRIC_CA_SERVER_CA_NAME=ca-org1
      - FABRIC_CA_SERVER_PORT=7054
    command: sh -c 'fabric-ca-server start -b admin:adminpw -d'
    ports:
      - 7054:7054
    networks:
      - fabric_test

Save (Ctrl+O, Enter) and exit (Ctrl+X).

✅ Step 3 — Start the network

bash
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cd ~/NanoTrace/fabric-network/network/scripts
./start_network.sh

Then check running containers:

bash
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docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

👉 Do you want me to expand this docker-compose-test-net.yaml later to include CLI tools and CouchDB (for more realistic dev), or keep it as a minimal orderer + peer + CA for now?

You’re right — we haven’t run that Fabric setup yet. Let’s lock it in, cleanly.

Step 1 — Create and run setup_fabric.sh (VPS terminal: quantworld)

Open the script:

bash
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cd ~/NanoTrace
nano setup_fabric.sh

Paste the full script below (it writes your compose file and a starter script), then save (Ctrl+O, Enter) and exit (Ctrl+X):

bash
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#!/bin/bash
set -e

echo "🔗 Setting up Hyperledger Fabric network..."

FABRIC_ROOT="/home/michal/NanoTrace/fabric-network"
mkdir -p "$FABRIC_ROOT"
cd "$FABRIC_ROOT"

# Download Fabric binaries and samples (Fabric 2.5.4, CA 1.5.7)
curl -sSL https://bit.ly/2ysbOFE | bash -s -- 2.5.4 1.5.7

# Create network skeleton
mkdir -p network/organizations/{peerOrganizations,ordererOrganizations}
mkdir -p network/{configtx,docker,scripts}

# Write docker-compose for test network
cat > network/docker/docker-compose-test-net.yaml << 'DOCKER_COMPOSE'
version: '3.7'

volumes:
  orderer.nanotrace.com:
  peer0.org1.nanotrace.com:
  peer0.org2.nanotrace.com:

networks:
  nanotrace:
    name: fabric_nanotrace

services:
  orderer.nanotrace.com:
    container_name: orderer.nanotrace.com
    image: hyperledger/fabric-orderer:2.5.4
    environment:
      - FABRIC_LOGGING_SPEC=INFO
      - ORDERER_GENERAL_LISTENADDRESS=0.0.0.0
      - ORDERER_GENERAL_LISTENPORT=7050
      - ORDERER_GENERAL_LOCALMSPID=OrdererMSP
      - ORDERER_GENERAL_LOCALMSPDIR=/var/hyperledger/orderer/msp
      - ORDERER_GENERAL_TLS_ENABLED=false
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric
    command: orderer
    volumes:
      - ../organizations/ordererOrganizations/nanotrace.com/orderers/orderer.nanotrace.com/msp:/var/hyperledger/orderer/msp
      - orderer.nanotrace.com:/var/hyperledger/production/orderer
    ports:
      - 7050:7050
    networks:
      - nanotrace

  peer0.org1.nanotrace.com:
    container_name: peer0.org1.nanotrace.com
    image: hyperledger/fabric-peer:2.5.4
    environment:
      - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
      - CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=fabric_nanotrace
      - FABRIC_LOGGING_SPEC=INFO
      - CORE_PEER_TLS_ENABLED=false
      - CORE_PEER_ID=peer0.org1.nanotrace.com
      - CORE_PEER_ADDRESS=peer0.org1.nanotrace.com:7051
      - CORE_PEER_LISTENADDRESS=0.0.0.0:7051
      - CORE_PEER_CHAINCODEADDRESS=peer0.org1.nanotrace.com:7052
      - CORE_PEER_CHAINCODELISTENADDRESS=0.0.0.0:7052
      - CORE_PEER_GOSSIP_BOOTSTRAP=peer0.org1.nanotrace.com:7051
      - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.org1.nanotrace.com:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
      - CORE_OPERATIONS_LISTENADDRESS=peer0.org1.nanotrace.com:9444
    volumes:
      - /var/run/docker.sock:/host/var/run/docker.sock
      - ../organizations/peerOrganizations/org1.nanotrace.com/peers/peer0.org1.nanotrace.com/msp:/etc/hyperledger/fabric/msp
      - peer0.org1.nanotrace.com:/var/hyperledger/production
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    command: peer node start
    ports:
      - 7051:7051
      - 9444:9444
    networks:
      - nanotrace

  ca.org1.nanotrace.com:
    container_name: ca.org1.nanotrace.com
    image: hyperledger/fabric-ca:1.5.7
    environment:
      - FABRIC_CA_HOME=/etc/hyperledger/fabric-ca-server
      - FABRIC_CA_SERVER_CA_NAME=ca-org1
      - FABRIC_CA_SERVER_PORT=7054
    command: sh -c 'fabric-ca-server start -b admin:adminpw -d'
    ports:
      - 7054:7054
    networks:
      - nanotrace

  cli:
    container_name: cli
    image: hyperledger/fabric-tools:2.5.4
    environment:
      - GOPATH=/opt/gopath
      - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock
      - FABRIC_LOGGING_SPEC=INFO
      - CORE_PEER_ID=cli
      - CORE_PEER_ADDRESS=peer0.org1.nanotrace.com:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
      - CORE_PEER_TLS_ENABLED=false
      - CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.nanotrace.com/users/Admin@org1.nanotrace.com/msp
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    command: /bin/bash
    volumes:
      - /var/run/docker.sock:/host/var/run/docker.sock
      - ../organizations:/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/
      - ../../chaincode:/opt/gopath/src/github.com/chaincode
    depends_on:
      - peer0.org1.nanotrace.com
    networks:
      - nanotrace
DOCKER_COMPOSE

# Write a simple start script
cat > network/scripts/start_network.sh <<'START'
#!/bin/bash
set -euo pipefail
echo "🚀 Starting Fabric test network..."
cd "$(dirname "$0")/../docker"
docker compose -f docker-compose-test-net.yaml up -d
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"
echo "✅ Fabric network started."
START

chmod +x network/scripts/start_network.sh

echo "✅ Fabric network configuration created!"
echo "Run:  ~/NanoTrace/fabric-network/network/scripts/start_network.sh"

Run it:

bash
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chmod +x setup_fabric.sh
./setup_fabric.sh

Step 2 — Start the network (same terminal)

bash
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~/NanoTrace/fabric-network/network/scripts/start_network.sh
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

Post the docker ps table. If any container exits, paste its logs:

bash
Copy code
docker logs orderer.nanotrace.com --tail=80
docker logs peer0.org1.nanotrace.com --tail=80
docker logs ca.org1.nanotrace.com --tail=80

You’re moving like a pro, Michal — once this is up, we’ll wire the Flask backend to this network and get your first cert flow live.

Nice. Since you “have this in your file,” here’s the fastest, low-risk way to get Fabric containers running now from your terminal — without waiting on MSP/TLS material.

Step 1 — Drop in a minimal compose (no MSP mounts) alongside your file

Terminal:

bash
Copy code
nano ~/NanoTrace/fabric-network/network/docker/docker-compose-test-net.min.yaml

Paste:

yaml
Copy code
version: '3.7'
networks: { fabric_test: {} }

services:
  orderer.example.com:
    image: hyperledger/fabric-orderer:2.5.4
    container_name: orderer.example.com
    command: orderer
    environment:
      - ORDERER_GENERAL_LISTENADDRESS=0.0.0.0
      - ORDERER_GENERAL_LISTENPORT=7050
      - ORDERER_GENERAL_LOCALMSPID=OrdererMSP
      - ORDERER_GENERAL_TLS_ENABLED=false
    ports: [ "7050:7050" ]
    networks: [ fabric_test ]

  peer0.org1.example.com:
    image: hyperledger/fabric-peer:2.5.4
    container_name: peer0.org1.example.com
    command: peer node start
    environment:
      - CORE_PEER_ID=peer0.org1.example.com
      - CORE_PEER_ADDRESS=peer0.org1.example.com:7051
      - CORE_PEER_LISTENADDRESS=0.0.0.0:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
      - CORE_PEER_TLS_ENABLED=false
    ports: [ "7051:7051" ]
    networks: [ fabric_test ]

  ca.org1.example.com:
    image: hyperledger/fabric-ca:1.5.7
    container_name: ca.org1.example.com
    command: sh -c 'fabric-ca-server start -b admin:adminpw -d'
    environment:
      - FABRIC_CA_HOME=/etc/hyperledger/fabric-ca-server
      - FABRIC_CA_SERVER_CA_NAME=ca-org1
      - FABRIC_CA_SERVER_PORT=7054
    ports: [ "7054:7054" ]
    networks: [ fabric_test ]

Save and exit.

Step 2 — Start and verify (still in terminal)

bash
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cd ~/NanoTrace/fabric-network/network/docker
docker compose -f docker-compose-test-net.min.yaml up -d
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

You should see three containers “Up …”.
If anything exits, run:

bash
Copy code
docker logs orderer.example.com --tail=80
docker logs peer0.org1.example.com --tail=80
docker logs ca.org1.example.com --tail=80

When this is green, I’ll take you one step forward to generate crypto + proper MSP and switch you back to your full compose (the one you already have in your file) so we can run a real channel and chaincode.

Beautiful. Your minimal Fabric network is UP:

• orderer.example.com (2.5.4) — Up

• peer0.org1.example.com (2.5.4) — Up

• ca.org1.example.com (1.5.7) — Up

We’ll keep momentum, two steps only.

Step 1 — Quick health check (VPS terminal: quantworld)

Make sure containers stay healthy for a few minutes:

bash
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docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"
docker logs orderer.example.com --tail=50 | tail -n +1
docker logs peer0.org1.example.com --tail=50 | tail -n +1
docker logs ca.org1.example.com --tail=30 | tail -n +1

You should see the orderer/peer “Starting/Started” lines continuing without crashes.

Step 2 — Build the Flask backend skeleton (VPS terminal: quantworld)

We’ll scaffold a clean MVP backend so you can issue users/certs now and later wire in Fabric calls.

Create the builder script:

bash
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cd ~/NanoTrace
nano build_backend.sh

Paste this full script, save (Ctrl+O, Enter) and exit (Ctrl+X):

bash
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#!/bin/bash
set -euo pipefail

echo "🧱 Building NanoTrace Flask backend..."

ROOT="$HOME/NanoTrace/backend"
mkdir -p "$ROOT/app"/{models,views,utils,templates,static} "$ROOT"/{config,migrations}

# __init__.py – app factory
cat > "$ROOT/app/__init__.py" <<'PY'
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_login import LoginManager
from flask_wtf.csrf import CSRFProtect
from dotenv import load_dotenv
import os

db = SQLAlchemy()
migrate = Migrate()
login_manager = LoginManager()
csrf = CSRFProtect()

def create_app():
    load_dotenv()
    app = Flask(__name__, template_folder="templates", static_folder="static")
    app.config["SECRET_KEY"] = os.getenv("SECRET_KEY", "change-me")
    app.config["SQLALCHEMY_DATABASE_URI"] = os.getenv("DATABASE_URL", "postgresql://nanotrace:password@localhost/nanotrace")
    app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False

    db.init_app(app)
    migrate.init_app(app, db)
    login_manager.init_app(app)
    csrf.init_app(app)

    from .views.routes import bp as main_bp
    app.register_blueprint(main_bp)

    return app
PY

# models.py – User, Certificate
cat > "$ROOT/app/models/models.py" <<'PY'
from datetime import datetime
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from .. import db

class User(UserMixin, db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(255), unique=True, nullable=False, index=True)
    password_hash = db.Column(db.String(255), nullable=False)
    is_admin = db.Column(db.Boolean, default=False)
    confirmed = db.Column(db.Boolean, default=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    def set_password(self, pwd): self.password_hash = generate_password_hash(pwd)
    def check_password(self, pwd): return check_password_hash(self.password_hash, pwd)

class Certificate(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    cert_id = db.Column(db.String(64), unique=True, index=True, nullable=False)
    product_name = db.Column(db.String(255), nullable=False)
    nano_material = db.Column(db.String(255), nullable=False)
    msds_url = db.Column(db.String(512))
    supplier = db.Column(db.String(255))
    expiry_date = db.Column(db.Date)
    approved = db.Column(db.Boolean, default=False)
    owner_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
PY

# routes.py – minimal pages and health
cat > "$ROOT/app/views/routes.py" <<'PY'
from flask import Blueprint, render_template, jsonify
from .. import db

bp = Blueprint("main", __name__)

@bp.route("/")
def index():
    return render_template("index.html")

@bp.route("/healthz")
def healthz():
    try:
        db.session.execute("SELECT 1")
        return jsonify(status="ok"), 200
    except Exception as e:
        return jsonify(status="db_error", error=str(e)), 500
PY

# templates/index.html – placeholder
cat > "$ROOT/app/templates/index.html" <<'HTML'
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8"/>
  <title>NanoTrace</title>
  <meta name="viewport" content="width=device-width,initial-scale=1"/>
  <style>body{font-family:system-ui,-apple-system,Segoe UI,Roboto;max-width:900px;margin:4rem auto;padding:0 1rem}code{background:#f3f3f3;padding:.2rem .4rem;border-radius:6px}</style>
</head>
<body>
  <h1>NanoTrace — Backend Online</h1>
  <p>Your Flask backend is running. Try <code>/healthz</code> for DB health.</p>
</body>
</html>
HTML

# app.py – WSGI entrypoint
cat > "$ROOT/app.py" <<'PY'
from app import create_app
app = create_app()

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5051, debug=True)
PY

echo "✅ Backend files created at $ROOT"
echo "→ Next: activate venv, init DB, run server."

Make it executable and run it:

bash
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chmod +x build_backend.sh
./build_backend.sh

Now initialize the DB and start the app:

bash
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# terminal: quantworld
cd ~/NanoTrace
source venv/bin/activate
export FLASK_APP=backend/app.py

# create migrations & DB tables
flask db init
flask db migrate -m "init schema"
flask db upgrade

# run the development server
python backend/app.py

Open in a browser (or curl from the VPS):

bash
Copy code
curl -s http://127.0.0.1:5051/healthz

Expected: {"status":"ok"}.

When that’s green, we’ll do the next business step: add user registration + admin login and hook QR issuance — then later we’ll switch the Fabric network from “minimal” to “real MSP/channel” and bind the cert issue flow to a chaincode call.

Great work. Your peer and CA are healthy; the orderer is crashing because there’s no genesis block/MSP mounted (expected with our minimal compose).

We’ll keep moving—just two tight steps.

Step 1 — Remove the crashing orderer (clean the noise)

Terminal:

bash
Copy code
docker rm -f orderer.example.com
docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

You should see only:

• peer0.org1.example.com — Up

• ca.org1.example.com — Up

Step 2 — Build the Flask backend skeleton (start earning functionality)

Terminal:

bash
Copy code
cd ~/NanoTrace
nano build_backend.sh

Paste this script, save (Ctrl+O, Enter) and exit (Ctrl+X):

bash
Copy code
#!/bin/bash
set -euo pipefail

echo "🧱 Building NanoTrace Flask backend..."

ROOT="$HOME/NanoTrace/backend"
mkdir -p "$ROOT/app"/{models,views,utils,templates,static} "$ROOT"/{config,migrations}

# __init__.py – app factory
cat > "$ROOT/app/__init__.py" <<'PY'
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_login import LoginManager
from flask_wtf.csrf import CSRFProtect
from dotenv import load_dotenv
import os

db = SQLAlchemy()
migrate = Migrate()
login_manager = LoginManager()
csrf = CSRFProtect()

def create_app():
    load_dotenv()
    app = Flask(__name__, template_folder="templates", static_folder="static")
    app.config["SECRET_KEY"] = os.getenv("SECRET_KEY", "change-me")
    app.config["SQLALCHEMY_DATABASE_URI"] = os.getenv("DATABASE_URL", "postgresql://nanotrace:password@localhost/nanotrace")
    app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False

    db.init_app(app)
    migrate.init_app(app, db)
    login_manager.init_app(app)
    csrf.init_app(app)

    from .views.routes import bp as main_bp
    app.register_blueprint(main_bp)

    return app
PY

# models.py – User, Certificate
cat > "$ROOT/app/models/models.py" <<'PY'
from datetime import datetime
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from .. import db

class User(UserMixin, db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(255), unique=True, nullable=False, index=True)
    password_hash = db.Column(db.String(255), nullable=False)
    is_admin = db.Column(db.Boolean, default=False)
    confirmed = db.Column(db.Boolean, default=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    def set_password(self, pwd): self.password_hash = generate_password_hash(pwd)
    def check_password(self, pwd): return check_password_hash(self.password_hash, pwd)

class Certificate(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    cert_id = db.Column(db.String(64), unique=True, index=True, nullable=False)
    product_name = db.Column(db.String(255), nullable=False)
    nano_material = db.Column(db.String(255), nullable=False)
    msds_url = db.Column(db.String(512))
    supplier = db.Column(db.String(255))
    expiry_date = db.Column(db.Date)
    approved = db.Column(db.Boolean, default=False)
    owner_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
PY

# routes.py – minimal pages and health
cat > "$ROOT/app/views/routes.py" <<'PY'
from flask import Blueprint, render_template, jsonify
from .. import db

bp = Blueprint("main", __name__)

@bp.route("/")
def index():
    return render_template("index.html")

@bp.route("/healthz")
def healthz():
    try:
        db.session.execute("SELECT 1")
        return jsonify(status="ok"), 200
    except Exception as e:
        return jsonify(status="db_error", error=str(e)), 500
PY

# templates/index.html – placeholder
cat > "$ROOT/app/templates/index.html" <<'HTML'
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8"/>
  <title>NanoTrace</title>
  <meta name="viewport" content="width=device-width,initial-scale=1"/>
  <style>body{font-family:system-ui,-apple-system,Segoe UI,Roboto;max-width:900px;margin:4rem auto;padding:0 1rem}code{background:#f3f3f3;padding:.2rem .4rem;border-radius:6px}</style>
</head>
<body>
  <h1>NanoTrace — Backend Online</h1>
  <p>Your Flask backend is running. Try <code>/healthz</code> for DB health.</p>
</body>
</html>
HTML

# app.py – WSGI entrypoint
cat > "$ROOT/app.py" <<'PY'
from app import create_app
app = create_app()

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5051, debug=True)
PY

echo "✅ Backend files created at $ROOT"
echo "→ Next: activate venv, init DB, run server."

Run it:

bash
Copy code
chmod +x build_backend.sh
./build_backend.sh

Then:

bash
Copy code
source ~/NanoTrace/venv/bin/activate
cd ~/NanoTrace
export FLASK_APP=backend/app.py
flask db init
flask db migrate -m "init schema"
flask db upgrade
python backend/app.py

Test in terminal:

bash
Copy code
curl -s http://127.0.0.1:5051/healthz

Reply with the docker ps after removing the orderer and the /healthz response. Then we’ll take the next step: add user registration + admin login, and later we’ll generate proper MSP + genesis to bring a full orderer online.

Got it, Michal. Let’s lock in a clear project document of what you’ve built so far — this will serve as a foundation for the next dev phases.

NanoTrace Project — Development Progress Report

1. Environment Setup

• Server: Ubuntu 24.04.3 LTS (kernel 6.8.0-78-generic), host: quantworld.

• User: michal.

• Base directory: /home/michal/NanoTrace.

Installed Core Dependencies

• Python 3.12.3 with virtualenv (venv).

• PostgreSQL 16.9 (with contrib modules).

• Redis 7.0.15.

• Docker 28.3.3, Docker Compose v2.20.0.

• Go 1.21.0 (for Fabric chaincode).

• Node.js 18.20.8 + npm 10.8.2.

• NGINX 1.24.0 + Certbot 2.9.0 (for HTTPS in production).

2. Project Structure

plaintext
Copy code
~/NanoTrace
├── backend/               # Flask backend application
│   ├── app/
│   │   ├── __init__.py    # App factory
│   │   ├── models/        # DB models (User, Certificate)
│   │   ├── views/         # Flask routes
│   │   ├── templates/     # HTML templates
│   │   └── static/        # Static assets (CSS/JS)
│   ├── config/            # App configs
│   ├── migrations/        # Flask-Migrate DB migrations
│   └── app.py             # WSGI entrypoint
│
├── fabric-network/         # Hyperledger Fabric artifacts
│   ├── fabric-samples/     # Downloaded Fabric samples (2.5.4)
│   └── network/
│       ├── docker/
│       │   └── docker-compose-test-net.min.yaml
│       └── scripts/
│           └── start_network.sh
│
├── venv/                   # Python virtual environment
└── scripts/                # Setup scripts
    ├── install_dependencies.sh
    └── setup_fabric.sh

3. Blockchain (Fabric) Setup

Fabric Components Installed

• Binaries: Fabric v2.5.4, CA v1.5.7.

• Docker images pulled:

  • hyperledger/fabric-peer:2.5.4

  • hyperledger/fabric-orderer:2.5.4

  • hyperledger/fabric-ca:1.5.7

  • hyperledger/fabric-tools:2.5.4

Current Network Status

• Running containers:

  • peer0.org1.example.com → ✅ Healthy.

  • ca.org1.example.com → ✅ Healthy.

• Orderer: fails (missing genesis block + MSP).
  → Temporary workaround: running peer + CA only.

Next Blockchain Steps

• Generate crypto material (MSP, TLS).

• Create genesis block with configtxgen.

• Start orderer + full channel.

• Deploy chaincode for certification logic.

4. Backend (Flask) Setup

• Framework: Flask with SQLAlchemy, Flask-Migrate, Flask-Login.

• Database Models:

  • User: authentication, admin role, email verification.

  • Certificate: product metadata, nano-material type, expiry, approval state.

• Routes:

  • / → index page.

  • /healthz → DB connectivity check.

• Templates:

  • Basic index.html with project placeholder.

• DB Migration:

  • Initialized and upgraded schema with Flask-Migrate.

Next Backend Steps

• Add user registration + admin login pages.

• Implement certificate issuance flow:

  • User applies.

  • Admin approves.

  • System generates cert ID + QR.

• Wire backend → Fabric peer → chaincode.

5. Current Achievements

• Server environment fully provisioned.

• All core dependencies installed (Python, DB, Docker, Fabric, Node).

• Minimal Fabric network started (peer + CA).

• Flask backend skeleton live, DB connected.

• Health check endpoint functional.

6. Next Development Milestones

1. Backend: Build user registration & authentication (Flask-Login).

2. Blockchain: Generate MSP + genesis block, bring up orderer.

3. Integration: Implement chaincode for certification, wire backend to Fabric.

4. Frontend: Add registration, login, certificate application forms.

5. Deployment: Configure Gunicorn + NGINX + SSL for production.

📌 Summary:
You now have a working backend skeleton + Fabric peer & CA containers running. The project is positioned to integrate user auth and begin issuing blockchain-backed NanoTrace certificates.

Michal, do you want me to now expand this into a proper docs/ARCHITECTURE.md file inside your repo, so it lives next to your codebase for future contributors (or for you to track milestones)?

Perfect. Let’s drop this into your project so it’s always part of the repo.

Step 1 — Create the docs folder if missing

bash
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mkdir -p ~/NanoTrace/docs
nano ~/NanoTrace/docs/ARCHITECTURE.md

Step 2 — Paste this content

markdown
Copy code
# NanoTrace Architecture & Development Progress

## 1. Environment Setup
- **Server**: Ubuntu 24.04.3 LTS (kernel `6.8.0-78-generic`), host: `quantworld`.
- **Base directory**: `/home/michal/NanoTrace`.
- **Core Dependencies Installed**:
  - Python 3.12.3 + venv
  - PostgreSQL 16.9
  - Redis 7.0.15
  - Docker 28.3.3, Docker Compose v2.20.0
  - Go 1.21.0
  - Node.js 18.20.8 + npm 10.8.2
  - NGINX 1.24.0 + Certbot 2.9.0

---

## 2. Project Structure
```plaintext
~/NanoTrace
├── backend/               # Flask backend application
│   ├── app/
│   │   ├── __init__.py
│   │   ├── models/
│   │   ├── views/
│   │   ├── templates/
│   │   └── static/
│   ├── config/
│   ├── migrations/
│   └── app.py
│
├── fabric-network/
│   ├── fabric-samples/     # Fabric v2.5.4 samples
│   └── network/
│       ├── docker/
│       │   └── docker-compose-test-net.min.yaml
│       └── scripts/
│           └── start_network.sh
│
├── venv/
└── scripts/
    ├── install_dependencies.sh
    └── setup_fabric.sh